Modified incision design for submental flap: an excellent design method for the reconstruction of a defect after head and neck tumor resection. oleh Fa-yu Liu, Rui-wu Li, Jawad Safdar, Zhen-ning Li, Nan Guo, Zhong-fei Xu, Shu-fen Ge, Jun-lin Li, Shao-hui Huang, Xue-xin Tan, Chang-fu Sun